package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.entity.SetmealDish;
import com.sky.exception.BaseException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import javafx.print.Collation;
import org.apache.commons.collections4.CollectionUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

@Service
public class DishServiceimpl implements DishService {

    @Autowired
    DishMapper dishMapper;

    @Autowired
    DishFlavorMapper dishFlavorMapper;

    @Autowired
    SetmealDishMapper setmealDishMapper;

    @Override
    public void save(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);

        dishMapper.insert(dish);

        Long id = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(CollectionUtils.isNotEmpty(flavors)){
            flavors.forEach(flavor -> {
                flavor.setDishId(id);
            });
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(), dishPageQueryDTO.getPageSize());
        Page<DishVO> page = this.dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }

    @Override
    public void delete(List<Long> ids) {
        //校验是否有启售的
        for(Long id : ids){
            Dish query = this.dishMapper.query(id);
            if(query.getStatus().equals(StatusConstant.ENABLE)){
                throw new BaseException(MessageConstant.DISH_ON_SALE);
            }
        }

        //校验是否有在套餐内的
        List<SetmealDish> setmealDishes = this.setmealDishMapper.queryByDishIds(ids);
        if(CollectionUtils.isNotEmpty(setmealDishes)){
            throw new BaseException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }

        this.dishMapper.deleteByIds(ids);
        this.dishFlavorMapper.deleteByDishIds(ids);

    }

    @Override
    public void updateStatus(Integer status, Long id) {
        Dish dish = Dish.builder().id(id).status(status).build();
        this.dishMapper.update(dish);
    }

    @Override
    public DishVO query(Long id) {
        DishVO dishVO = this.dishMapper.queryVO(id);
        return dishVO;
    }

    @Override
    @Transactional
    public void update(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);

        this.dishMapper.update(dish);
        this.dishFlavorMapper.deleteByDishIds(Collections.singletonList(dish.getId()));

        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(CollectionUtils.isNotEmpty(flavors)){
            flavors.forEach(flavor -> {
                flavor.setDishId(dishDTO.getId());
            });
            this.dishFlavorMapper.insertBatch(flavors);
        }
    }

    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    public List<Dish> list(Long categoryId) {
        Dish dish = Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }


    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }
}
